博敏电子：公司的PCB及陶瓷衬板产品已有部分应用于航空航天等领域，相关收入占整体收入较小

Group 1 - The company has products in the satellite aerospace field, specifically PCB and ceramic substrates, which have seen some application in aerospace and related sectors [2] - The revenue generated from these aerospace-related products constitutes a small portion of the company's overall income [2]